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Exoplanet mission timeline

Ariel Cosmos website

Ariel Definition Study Report (Red Book)

Science objectives

Science objectives Although astronomers have discovered large numbers of exoplanets in recent years, it is still far from clear what the nature of these planets are, how they formed and...

Ariel moves from blueprint to reality

ESA's exoplanet mission Ariel, scheduled for launch in 2029, has moved from study to implementation phase, following which an industrial contractor will be selected to build the spacecraft.

Summary

Summary Ariel Atmospheric Remote-sensing Infrared Exoplanet Large-survey Enabling Planetary Science across Light-years Cosmic Vision Themes What are the...

Operations

Operations Ariel is the fourth medium-class (M4) mission in ESA's Cosmic Vision Plan. It is scheduled for launch in 2029. Launch and orbit Ariel will be launched into an...

Payload

Payload The Ariel payload consists of an integrated suite comprising the telescope assembly (TA), the Ariel infrared spectrometer (AIRS), and the Fine Guidance System (FGS)/photometer...

Spacecraft

Spacecraft Ariel's design builds on the thermal design heritage from ESA's Planck mission, and is a modified version of that proposed for EChO (the Exoplanet Characterization...

Area introduction

Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was selected as the fourth medium-class mission in ESA's Cosmic Vision programme. It will study what exoplanets are made of,...